From their humble beginnings on Taiwan’s video series Weather Girls, a seven-girl idol group by the same name that specializes in bringing you the week’s weather, have been building a solid fan base in their new home of Japan.

Though a variety of theme months and a constantly improving grasp of the Japanese language, these girls have steadily shown that they are willing to work hard for their place in the spotlight. However, the next step is a doozy.

It has come to light that all seven girls (one for each day of the week) are studying hard to take the extremely strict National Weather Forecaster Exam next year. The test, which was established in 1994, reportedly has a 5 percent pass rate. However, if the girls succeed they will become full-fledged weather forecasters.

Since it launched in summer 2010, the series has taken off in Japan more than any other country, likely because most of the monthly video themes are taken from Japanese culture. Many of the themes even have the girls speaking endearingly broken Japanese, which just scores them more kawaii points.

Now, as if to capitalize on that popularity, the Weather Girls have sent seven of their best to Japan to form a brand new idol group called…Weather Girls!